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  <title>Functions and Statements which will spread the tainted mark of a
   tainted string</title>
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  <h2 class="title">Functions and Statements which will spread the tainted mark of a
   tainted string</h2>
  <p class="para">
   <table class="doctable table">
    
    
      <col />
      <col />
     <thead>
      <tr>
       <th>Function/Statement</th>
       <th>Since</th>
      </tr>

     </thead>

     <tbody class="tbody">
      <tr>
       <td>= (assign)</td>
       <td>0.1.0</td>
      </tr>

      <tr>
       <td>. (concat)</td>
       <td>0.1.0</td>
      </tr>

      <tr>
       <td>&quot;{$var}&quot; (variable substitution)</td>
       <td>0.1.0</td>
      </tr>

      <tr>
       <td>.= (assign concat)</td>
       <td>0.1.0</td>
      </tr>

      <tr>
       <td>strval</td>
       <td>0.3.0</td>
      </tr>

      <tr>
       <td>explode/split</td>
       <td>0.3.0</td>
      </tr>

      <tr>
       <td>implode/join</td>
       <td>0.3.0</td>
      </tr>

      <tr>
       <td>sprintf</td>
       <td>0.3.0</td>
      </tr>

      <tr>
       <td>vsprintf</td>
       <td>0.3.0</td>
      </tr>

      <tr>
       <td>trim</td>
       <td>0.4.0</td>
      </tr>

      <tr>
       <td>rtrim</td>
       <td>0.4.0</td>
      </tr>

      <tr>
       <td>ltrim</td>
       <td>0.4.0</td>
      </tr>

      <tr>
       <td>strstr</td>
       <td>0.5.0</td>
      </tr>

      <tr>
       <td>str_pad</td>
       <td>0.5.0</td>
      </tr>

      <tr>
       <td>str_replace</td>
       <td>0.5.0</td>
      </tr>

      <tr>
       <td>substr</td>
       <td>0.5.0</td>
      </tr>

      <tr>
       <td>strtolower</td>
       <td>0.5.0</td>
      </tr>

      <tr>
       <td>strtoupper</td>
       <td>0.5.0</td>
      </tr>

     </tbody>
    
   </table>

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